Research Papers

Modeling and Analysis of an Offshore Wind Turbine With Fluid Power Transmission for Centralized Electricity Generation

[+] Author and Article Information
Antonio Jarquin Laguna

Offshore Engineering Section,
Delft University of Technology,
Delft 2628CN, The Netherlands
e-mail: A.JarquinLaguna@tudelft.nl

Contributed by the Design Engineering Division of ASME for publication in the JOURNAL OF COMPUTATIONAL AND NONLINEAR DYNAMICS. Manuscript received October 30, 2013; final manuscript received July 25, 2014; published online April 2, 2015. Assoc. Editor: Carlo L. Bottasso.

J. Comput. Nonlinear Dynam 10(4), 041002 (Jul 01, 2015) (14 pages) Paper No: CND-13-1263; doi: 10.1115/1.4028110 History: Received October 30, 2013; Revised July 25, 2014; Online April 02, 2015

This paper presents a mathematical model of an innovative offshore wind turbine with fluid power transmission. The proposed concept is a variable-speed, pitch controlled turbine which differs from conventional technology by using fluid power technology as a medium to transfer the energy from the wind. The final aim is to use several turbines to centralize electricity generation. Unlike conventional variable speed concepts, the proposed turbine comprises a passive-torque control method which allows the turbine to operate at optimal aerodynamic performance for different wind speeds. A numerical model of a single turbine is developed and time-domain simulations are used to analyze the dynamic response of the different operational parameters to a turbulent wind speed input. The results are compared with those of a reference offshore wind turbine with similar characteristics. It is shown that operation below rated wind speed with a passive control is possible for a single turbine with a better dynamic performance than the reference in terms of transmission torque. However, the efficiency of the energy transmission is reduced throughout the operational range. The addition and simulation of more turbines to the hydraulic network is necessary to determine to which extent the benefits of a centralized wind farm compensate for the relatively lower efficiency.

Copyright © 2015 by ASME
Your Session has timed out. Please sign back in to continue.



Grahic Jump Location
Fig. 1

Schematic diagram of a single DOT

Grahic Jump Location
Fig. 2

Diagram of a Pelton wheel

Grahic Jump Location
Fig. 3

Subsystem block diagram of the wind turbine with fluid power transmission

Grahic Jump Location
Fig. 4

Simplified diagram of flow in a Pelton

Grahic Jump Location
Fig. 5

Torque-speed curve for passive control strategy

Grahic Jump Location
Fig. 6

Simplified schematic for top: gearbox concept; bottom: hydraulic concept

Grahic Jump Location
Fig. 7

Wind gust of 4 m/s in 10.5 s according to International Electromechanical Commission (IEC) standards, mean wind speed is 8 m/s

Grahic Jump Location
Fig. 8

Transient response to a 4 m/s wind gust starting at t = 30 s

Grahic Jump Location
Fig. 9

Hub height wind speed of 8 m/s with 17.67% TI

Grahic Jump Location
Fig. 10

Transient response operation below rated wind speed

Grahic Jump Location
Fig. 11

Generator platform operation below rated wind speed

Grahic Jump Location
Fig. 12

Performance comparison below rated wind speed

Grahic Jump Location
Fig. 13

Hub height wind speed of 15 m/s with 12% TI

Grahic Jump Location
Fig. 14

Transient response operation above rated wind speed

Grahic Jump Location
Fig. 15

Generator platform operation above rated wind speed

Grahic Jump Location
Fig. 16

Performance comparison above rated wind speed

Grahic Jump Location
Fig. 17

Distributed parameters pipeline representation

Grahic Jump Location
Fig. 18

Torque- and power-speed curves for the different concepts

Grahic Jump Location
Fig. 19

Power curves for the different concepts

Grahic Jump Location
Fig. 20

Steady-state efficiency for the different concepts




Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In